[Spice-devel] [vdagent-win PATCH] Remove small memory leak in log_version
Christophe Fergeau
cfergeau at redhat.com
Fri Jul 21 13:12:54 UTC 2017
On Fri, Jul 21, 2017 at 02:01:12PM +0100, Frediano Ziglio wrote:
> The outer info_buf pointer were always NULL (the internal one
> is another variable).
I'd expand a bit on what the leak is, at first I thought the short log
and long log were unrelated.
"log_version() declares 2 info_buf variables, the inner one is used to
hold allocated memory, but then we free the outer one, which is NULL."
Looks good otherwise,
Acked-by: Christophe Fergeau <cfergeau at redhat.com>
Christophe
>
> Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> ---
> OT: wonder why not using FindResource/LoadResource and so on instead
> of having to use the module file.
> ---
> common/vdlog.cpp | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/common/vdlog.cpp b/common/vdlog.cpp
> index 76f4297..c983127 100644
> --- a/common/vdlog.cpp
> +++ b/common/vdlog.cpp
> @@ -20,6 +20,7 @@
> #include <stdio.h>
> #include <stdarg.h>
> #include <share.h>
> +#include <vector>
>
> #define LOG_ROLL_SIZE (1024 * 1024)
>
> @@ -80,7 +81,6 @@ void log_version()
> {
> DWORD handle;
> TCHAR module_fname[MAX_PATH];
> - TCHAR* info_buf = NULL;
>
> try {
> if (!GetModuleFileName(NULL, module_fname, MAX_PATH)) {
> @@ -90,13 +90,13 @@ void log_version()
> if (version_inf_size == 0) {
> throw;
> }
> - TCHAR* info_buf = new TCHAR[version_inf_size];
> - if (!GetFileVersionInfo(module_fname, handle, version_inf_size, info_buf)) {
> + std::vector<TCHAR> info_buf(version_inf_size);
> + if (!GetFileVersionInfo(module_fname, handle, version_inf_size, &info_buf[0])) {
> throw;
> }
> UINT size;
> VS_FIXEDFILEINFO* file_info;
> - if (!VerQueryValue(info_buf, L"\\", (VOID**)&file_info, &size) ||
> + if (!VerQueryValue(&info_buf[0], L"\\", (VOID**)&file_info, &size) ||
> size < sizeof(VS_FIXEDFILEINFO)) {
> throw;
> }
> @@ -108,5 +108,4 @@ void log_version()
> } catch (...) {
> vd_printf("get version info failed");
> }
> - delete[] info_buf;
> }
> --
> 2.13.3
>
> _______________________________________________
> Spice-devel mailing list
> Spice-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/spice-devel
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